A reverse comedy that tells the story of a perfectionist assassin who falls and hits his head in a sauna, giving him amnesia. When a down-and-out actor switches locker keys with him, they switch lives until the hit-man, who soon becomes an action hero on TV, starts to remember things.
You can now watch Luck-Key online on the following streaming providers in the United States.
| Directing | Lee Kae-byeok | Director |
| Writing | Kenji Uchida | Original Story |
| Editing | Han Mi-yeon | Editor |
| Editing | Yang Jin-mo | Editor |
| Camera | Kim Tae-kyeong | Director of Photography |
| Writing | Jang Yoon-mi | Writer |
| Production | Syd Lim | Producer |
| Production | Jeong Hui-sun | Producer |
| Camera | Park Sung-ju | Camera Operator |
| Art | Lee Ha-jun | Production Design |
| Sound | Hong Ye-yeong | Sound Designer |
| Writing | Lee Kae-byeok | Adaptation |
| Art | Oh You-jin | Props |
| Art | Mo So-ra | Art Direction |
| Editing | Kevin Kang | Digital Intermediate |
| Costume & Make-Up | Park Ye-ri | Makeup & Hair |
| Crew | Park Jung-ryul | Martial Arts Choreographer |
| Lighting | Hong Seung-chul | Lighting Director |
| Sound | Lee Eun-joo | Production Sound Mixer |
| Production | Kim Jong-dae | Producer |
| Visual Effects | Yoon Dae-won | Special Effects Supervisor |
| Visual Effects | Ryu Jae-hwan | VFX Supervisor |
| Production | Jang Eun-young | Line Producer |
| Camera | Jang Hyeon-jin | Grip |
